As the rainy season winds down and spring irrigation startup is steadily creeping toward us, it’s time to prepare your irrigation system for the busy season ahead. The following recommendations are meant to give you direction for ensuring your irrigation is in top condition when the time comes for it to be called to duty.
Irrigation Controller
Is your irrigation controller up to the task of automatically providing the correct amounts of water to your landscape? Or is it time for a new smart controller?
The water districts offer rebates as an incentive to switch to smart controllers. They’re smart because they collect real-time weather data to automatically adjust irrigation schedules. Similar to thermostats—but for water instead of heat—; these devices can save you a boatload of water when properly programmed.
If you think it might be time for an upgrade, visit your local professional irrigation store to learn more about the benefits and available options.
For a spring startup, the following actions are recommended for your irrigation controller:
● Make sure each station turns its zone on and off reliably.
● If the controller has a backup 9-volt battery, ensure it has enough charge to last one year.
● Verify that the time and date are set correctly.
● Set up a spring irrigation schedule if the controller lacks smart functionality.
● If using a smart controller, verify it has stable Wi-Fi or cellular connection, and that the app functions correctly.
● Plug any holes in the bottom of the casing if the controller is located outdoors. Insects that enter the controller seeking warmth and shelter can play havoc with the circuit board, while small mice can chew through the wires.
Sprinklers
The following instructions pertain only to standard pop-up sprinklers and do not cover long-range gear-driven sprinklers.
Turn on each sprinkler zone and inspect the sprinklers while they are running.
Look for any defects, as well as broken or worn parts.
● Flush the sprinkler zone. There are two methods:
○ Method #1: Purchase a sprinkler throat retention tool, like the one shown in the above photo, available at professional irrigation stores. First remove the nozzle as shown in the photo, then turn on the station. Let the water run for at least 30 seconds before turning the station off. The tool is essential for keeping the throat of the sprinkler elevated above the soil level, preventing dirt from entering when the water shuts off. As an alternative to purchasing this tool, you can use several tight-fitting rubber bands.
○ Method #2: Purchase a flushing cap for your brand of sprinkler at a professional irrigation store. The flushing cap allows water to shoot out of the top of the sprinkle, helping to flush out any debris from the pipes and sprinklers.
● Clean filters. Unscrew the sprinkler nozzle to find the filter beneath. A white one is shown in the photo above. Make sure every sprinkler has a filter screen beneath the nozzle
● Is it time to change out your inefficient sprinkler nozzles to efficient ones? If you don’t already have high-efficiency sprinkler nozzles like Hunter MP Rotators, Rain Bird R-Vans, Toro Precision Rotary nozzles, or similar, consider consulting your local professional irrigation store to learn about the switch. Studies show that sprinklers with efficient nozzles can reduce water usage by up to 20% because they distribute the water more evenly and at a rate that prevents wasteful runoff, helping you conserve water and reducing your utility bills.
● Check the nozzles
○ Adjust the ones that are spraying in the wrong direction
○ Replace any broken or mismatched nozzles.
○ Clear clogged nozzles. Replace nozzles that are clogged beyond repair.
● If the sprinklers are misting, replace sprinkler heads with newer models that include built-in pressure regulation. While you’re at it make sure the new sprinkler heads also have check valves preinstalled in them.
● Raise any sunken sprinklers and straighten those that are tilted.
Drip
The following instructions pertain to all types of drip systems:
● Turn on drip zones and observe and listen for any issues.
● Observe emitters and make sure they are working properly, replacing any clogged or malfunctioning ones.
● Fix any found kinks, leaks, or breaks in the tubing.
● Ensure that drip lines are placed on top of the soil and covered with mulch.
● Flush the tubing to remove any dirt or debris. If you can’t find a flush valve, create a flush point.
○ For black tubing, cut the tubing and install a tee fitting with a short piece of tubing folded over for flushing, as shown in the first photo below.
○ For brown emitterline tubing, cut the tubing and install a tee fitting with a short piece of tubing, an adaptor, and a cap, as shown in the second photo below.
Conclusion
By following the instructions outlined above, you’ll be well on your way to getting your irrigation controller, sprinklers, and drip systems in ship shape for the upcoming irrigation season. For quality parts and expert advice, visit your local professional irrigation store. Several great options are available throughout Contra Costa County. Take action now, and your garden will thank you with a healthy, efficient irrigation setup!
Irrigation Stores in Contra Costa County
As Master Gardener Volunteers, we cannot give recommendations on finding Irrigation Stores in Contra Costa County. A simple Google search for "professional irrigation stores in Contra Costa County” however, will give you recommendations for the areas of Brentwood, Concord, Pacheco, and Richmond!